JP2003118190A - Printer - Google Patents

Abstract

(57) [Problem] To provide a printer capable of preventing a paper jam when reversing a check paper in a loop shape and easily removing the check paper even if the paper is jammed. A printer (1) according to the present invention includes a magnetic head (23) capable of reading magnetic ink characters on check paper and a print head (9) capable of writing / writing on check paper, and reciprocates in a predetermined direction. Possible carriage 7 and paper guide members 21, 22 for forming the first paper path 13
A paper feed roller 34 capable of feeding the check paper on the first paper path 13, and a second paper path branched from the first paper path 13
A paper reversing guide plate 38 movable between a closed position closed with respect to the paper feed roller 34 and an open position opened with respect to the paper feed roller.
And a switching lever 44 capable of switching the check paper path to either the first paper path 13 or the second paper path 37.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, magnetic ink characters (hereinafter referred to as "MICR" recorded on a check sheet.
(Magnetic Ink Character Recognition) characters ”. ), And is capable of front-end or endorsement printing depending on the contents included in the MICR character.

In the present application, "table writing" means MICR.
It means printing on the paper surface on which characters are recorded, and "endorsement" means printing on the paper surface on the back side of the paper surface on which MICR characters are recorded.

[0003]

2. Description of the Related Art Conventionally known printers are provided with a magnetic head capable of reading MICR characters and a print head for front writing and a print head for backing, respectively.

In this type of printer, a check sheet sent along a predetermined paper path is written by a print head for writing from one side of the check sheet based on information read from MICR characters. Alternatively, endorsement is performed from the other side of the check sheet by a printhead for endorsement.

Some conventional printers have a mechanism for reversing the entire check sheet by using a common print head for both front writing and back writing, and in such a printer, MICR is used. Based on the information read from the characters, while sending the check paper along the predetermined paper path and performing front-face printing on it, send the check paper to another paper path and reverse it before returning to the original paper path. Endorsement printing is performed on the returned product.

[0006]

However, such a conventional printer has the following problems.

That is, in the type in which the print heads for front writing and back writing are separate, there is a problem that the cost is high because of the large number of parts. On the other hand, in the type in which the print heads for front and back are shared, the reversing mechanism becomes a complicated mechanism to transfer the check sheet between a plurality of roller pairs. In addition to the problem that paper jams tend to occur when handing over check papers, there is also the problem that check papers need to be routed through an extra paper path in order to be reversed, which increases the processing time for check papers. It was Further, there is also a problem that a check sheet longer than the reverse sheet path length cannot be reversed.

In order to solve such a problem, in recent years, a check sheet can be reversed by a paper path partially formed in a loop while the check sheet is held by one roller pair. Printers that print on the front and back with a print head are being developed, but in such a printer, when the check paper is turned into a loop, the edges of the check paper may rub against each other, causing a paper jam. . Further, there is a problem that it is difficult to remove the check paper when a paper jam occurs.

The present invention has been made in order to solve such a technical problem, and an object thereof is to prevent paper jam when inverting check paper in a loop shape. It is an object of the present invention to provide a printer that can easily remove the check paper even if the paper is jammed.

[0010]

SUMMARY OF THE INVENTION The present invention, which has been made to achieve the above object, provides a magnetic head capable of reading magnetic ink characters recorded on check paper, a print head capable of printing on check paper, and a print head. A carriage on which a head is mounted and which can reciprocate in a predetermined direction, a paper path for carrying check paper, a first paper path connecting a magnetic head and a print head, and paper for carrying check paper A feed roller and a member for branching from the first paper path and forming a second paper path including the periphery of the paper feed roller, and a closed position closed to the paper feed roller and a paper feed roller. A paper inversion guide member movable between an open position opened with respect to,
A switching member that is provided at a portion where the first paper path and the second paper path intersect and that can switch the paper path of the check paper to either the first paper path or the second paper path. The printer is characterized by that.

According to the present invention, the second paper path branched from the first paper path for inverting the check paper is closed by the opening and closing of the paper inverting guide member with respect to the second paper path. The paper path and the second paper path opened with respect to the paper feed roller can be selected, and in a situation where the edge portions of the check paper intersect, the paper reversal guide member is placed in the open position to check. Since the front end portion and the rear end portion of the paper do not rub against each other, it is possible to prevent the paper jam even when the check paper is inverted in a loop shape. Further, according to the present invention, even if a paper jam occurs on the second paper path, such a check paper can be easily removed by opening the paper reversing guide member.

The present invention further includes an actuating member which is engageable with the paper reversing guide member, and the paper reversing guide member is moved to the closed position by being biased and is opened by engaging the actuating member. It is also effective to be configured to move to the position. It is also effective that the actuating member is configured to actuate the paper reversing guide member by engaging the carriage at a predetermined position.

According to the present invention, since the paper reversing guide member is opened and closed by the engagement with the carriage via the operation lever, only the position of the carriage needs to be controlled to open and close the paper reversing guide member. The configuration of the control system can be simplified.

In the present invention, the switching member is arranged in a position where the first paper path is closed by being biased, and is arranged in a position where the first paper path is opened according to the position of the carriage. Being done is also effective. According to the present invention, the switching member can be opened and closed only by controlling the position of the carriage.

Further, the present invention includes a foam stopper provided so as to be able to move forward and backward in the first paper path, and the foam stopper faces the paper feed roller by facing the paper reversal guide member arranged at the closed position. It is also effective to be configured to form a closed paper path. According to the present invention, since the check paper can be sandwiched between the form stopper and the paper reversing guide plate in the closed position, the check paper on the second paper path is surely transferred to the first paper path. Can be introduced.

Further, the printer of the present invention is arranged along the first paper path, print head for printing on the recording paper, and a first direction for directing the recording paper toward the print head.
And a paper feed roller capable of being conveyed in a second direction opposite to the first direction, and formed in a loop shape along the outer periphery of the paper feed roller, and in the second direction with respect to the paper feed roller. Side branch from the first paper path and
A second paper path that joins the first paper path on the side of the first direction and a path of the recording paper that is arranged at the branch position and is conveyed in the second direction. A switching member for switching to one of the paper paths, a guide member forming the second paper path, and an open position for guiding the recording paper in a direction substantially parallel to the first paper path, And a control unit that controls the opening and closing of the guide member, which is displaceable between a closed position that guides the recording paper to the confluence position, and a leading end of the recording paper that is conveyed in the second direction. The portion is moved from the open position to the closed position after passing the end of the guide member on the confluence side.

Thus, when the original paper path is branched, the guide member is opened to facilitate the reversal of the paper, and when the original paper path is merged, the guide member is closed to allow the leading edge of the recording paper by the guide member. Since it is possible to join the sheets while pressing the portions, it is possible to prevent the occurrence of paper jam.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, preferred embodiments of a printer according to the present invention will be described in detail with reference to the drawings. 1 is a perspective view showing a schematic configuration of a printer according to the present embodiment, FIG. 2 is a plan view showing a schematic configuration of a main part of the printer, and FIG. 3 is taken along line AA of FIG. FIG. 3 is a cross-sectional view showing a main part of the printer by cutting. As shown in FIG. 1, the printer 1 has a main body frame 2 and a sub-frame 3 provided thereon. A printing mechanism 4 is mounted on the sub-frame 3, and in this printing mechanism 4, a carriage 7 supported by both a carriage shaft 5 and a sub-carriage shaft 6 which are parallel to each other uses a belt 8 to drive power from a drive motor (not shown). It is configured to be able to reciprocate by receiving via. Further, an ink jet type print head 9 is provided on the carriage 7, and printing is performed on a sheet (check sheet) between the platen 10 and an ink jet type print head 9. A maintenance mechanism 11 for removing a head cap and excess ink is provided for the print head 9 at a portion outside the printing area (on the right side in FIG. 1) outside the platen 10.

As shown in FIG. 3, inside the main body frame 2, a paper guide upper member 21 and a paper guide lower member for forming a first paper path 13 connecting the print head 9 and the paper insertion opening 12 are formed. 22 are provided so as to face each other. In the paper guide upper member 21 on the downstream side of the first paper path 13,
A magnetic head 23 capable of reading MICR characters recorded on a check sheet is provided. As shown in FIG. 2 or FIG. 3, when the check paper is fed to the upper part of the main body frame 2, the check paper on the first paper path 13 is directly delivered to the print head 9, or A forward / reverse reversing mechanism 30 is provided which can select whether to branch from the paper path 13 to deliver the check paper to the print head 9 in an inverted state.

FIG. 4 (a) is a perspective view showing the schematic structure of the forward / reverse reversing mechanism, FIG. 4 (b) is a plan view showing the general structure of the forward / reverse reversing mechanism, and FIG. 5 (a) is the same. FIG. 5 (b) is a right side view showing the schematic configuration of the forward / reverse reversing mechanism, and FIG. 5 (c) is a main part of the forward / reverse reversing mechanism. FIG. As shown in FIG. 5, the forward / reverse reversing mechanism 30 has a main shaft 32 and a slave shaft 33 arranged side by side via a connecting plate 31, a paper feed roller 34 rotatable around the main shaft 32, and a slave shaft 33. Driven roller 35 rotatable to
And are arranged such that their contacting portions lie on a first paper path 13 extending from within the body frame 2. The paper feed roller 34 is configured to rotate in the forward and reverse directions by transmitting the power of a paper feed motor 36, which is a stepping motor, through a gear train (not shown). The feed roller 34 is adapted to rotate. here,
Regarding the rotation direction of the paper feed roller 34, the direction in which the check paper is sent to the downstream side of the first paper path (the print head 9 side) is referred to as the “forward direction”, and the upstream side of the first paper path (the magnetic head 2).
The direction of sending to (3 side) is "reverse direction".

The main shaft 32 has a second paper path 37 which is branched from the first paper path 13 and includes the periphery of the paper feed roller 34.
A paper reversal guide plate 38 for forming the sheet is swingably supported. The paper reversing guide plate 38 is provided on the platen 10.
And a guide portion 38 that has a length similar to that of the guide portion 38 and is formed to be parallel to a plane contacting the side surface of the paper feed roller 34.
The guide portion 38a is configured to rotate about the main shaft 32 in the closing direction or the opening direction with respect to the paper feed roller 34. As a result, when the paper reversing guide plate 38 is arranged at the closed position closed with respect to the paper feed roller 34, the paper reversal guide plate 38 branches from the first paper path 13 and travels around the paper feed roller 34 again to the first paper path. A loop-shaped second paper path (closed) 37A that intersects with the paper path 13 is formed, and when the second paper path 13 is arranged at the open position opened with respect to the paper feed roller 34, it branches from the first paper path 13. Paper feed roller 3
A second path extending around 4 and parallel to the first paper path 13.
The paper path (open) 37B is formed. The paper reversing guide plate 38 is configured to be biased in the closing direction with respect to the paper feed roller 34 by a torsion coil spring 39 attached between the paper reversing guide plate 38 and the maintenance mechanism 11.

On the other hand, as shown in FIG. 4 or 5, an operating lever 40 for opening the paper reversing guide plate 38 is biased by a torsion coil spring 41 at the right side portion of the paper reversing guide plate 38. The shaft 42 is supported in this state. The operating lever 40 includes a first contact portion 40 a and a second contact portion 40 that extend in two directions from the support shaft 42 at a predetermined angle.
b, the first contact portion 40a contacts the portion 38b of the paper reversing guide plate 38 with a biasing force, so that the second contact portion 40b causes the carriage 7 to move outside the right printing area.
It is configured to be arranged at a position where it can abut.
As a result, the paper reversing guide plate 38 causes the carriage 7 and the operating lever 40 to engage with each other, whereby the paper feed roller 3
It is designed to move in the opening direction with respect to 4.

As shown in FIG. 5, the main shaft 32 is further provided with a second paper path (closed) 3 between the main shaft 32 and the paper reversing guide plate 38.
A foam stopper 43 for forming 7A is swingably supported. The foam stopper 43 is formed in a claw shape including a portion parallel to the guide portion 38a of the paper reversing guide plate 38. And the foam stopper 43
Is placed at a position where the first paper path 13 is closed by the urging force of a spring (not shown) having a small force, while it is moved to a position where the first paper path 13 is opened by contact with the check paper. Is configured to be placed.

A switching lever 4 is provided below the paper feed roller 34 for switching the traveling direction of the check paper to either the first paper path 13 or the second paper path 37.
4 is swingably supported by a support shaft 48. The switching lever 44 is formed in a substantially arc shape whose cross section has a curvature similar to that of the paper feed roller 34. Then, the switching lever 44 is arranged at the position where the first paper path 13 is closed with the second paper path 37 being opened by the biasing force of the torsion coil spring 46, while the left side of the paper reversing guide plate 44 is arranged. By contacting the cam member 47 (see FIG. 2) provided at the portion of the first paper path 13 with the second paper path 37 closed.
Is configured to be placed in an open position. In addition,
This cam member 47 is provided on the carriage 7 outside the left printing area.
It is configured to operate the switching lever 44 by engaging with.

As shown in FIG. 4 or 5, in the vicinity of the driven shaft, a paper leading edge sensor 45, which is a light reflection type sensor, detects the leading edge of the check paper passing between the paper feed roller 34 and the driven roller 35. Installed to detect. Further, as shown in FIG. 3, a paper rear end sensor 46, which is a light-transmitting sensor, is inserted from the paper insertion opening 12 near the paper insertion opening 12 of the paper guide upper member 21 and the paper guide lower member 22. It is attached to detect the trailing edge of the check paper. The distance between the paper leading edge sensor 45 and the paper trailing edge sensor 46 is set so as to pass through the paper path (closed) 37A and to be a paper path shorter than the distance to a back surface print cueing position described later.

FIG. 6 is a block diagram showing a control system including a control unit of the printer of this embodiment. Printer 1
Control unit 50 for front and back marking on check paper
have. The control unit 50 includes a paper feed motor 36,
The paper head sensor 4 is electrically connected to the magnetic head 23, the print head 9, and the carriage drive motor 49.
5 and the paper trailing edge sensor 46 are also electrically connected. Then, the control unit 50 aligns the start position of the front end of the check sheet with the print head 9 and the start position of the endorsement of the check sheet with the print head 9 as described below. Endorsement positioning function 5
2. A branch position selection function 53 that controls the carriage 7 to open and close the switching lever 44, a length calculation function 54 that counts the amount of check paper conveyed and calculates its position and length, and controls the carriage 7. The second paper path opening / closing function 55 for opening / closing the paper reversing guide plate 38 is configured to be exhibited.

FIG. 7 is a flow chart showing the flow of main processing of the control unit, FIG. 8 is a flow chart showing the flow of MICR reading processing of the control unit, and FIG. 9 is a flow of endorsement printing processing of the control unit. 10 is a flowchart showing
6 is a flowchart showing a flow of a front page printing process of the control unit. 11 to 14 are diagrams showing a paper feed state of check paper. Hereinafter, with reference to FIGS. 7 to 10,
The operation of the printer will be described with reference to FIGS. 2 and 3 and FIGS.

As shown in FIG. 2, before the check paper M is inserted, the carriage 7 is arranged at the position C2 where it contacts the second contact portion 40b of the actuating lever 40 outside the right printing area. As a result, as shown in FIG. 11, the paper reversing guide plate 38 is moved to the second paper path (open) 37B.
Is located in the open position to select. Further, the foam stopper 43 is arranged at a position to close the first paper path 13 by being biased by a spring. Further, the switching lever 44 is arranged at a position to close the first paper path 13 by being biased by the torsion coil spring 46.

As shown in FIGS. 3 and 11, the printer 1
When the check paper M is inserted into the paper insertion opening 12 of the paper, the check paper M is detected by the paper rear end sensor 46, and abuts against the switching lever 44 to push it away, and then the paper feed roller 34 and the driven roller. It is detected by the paper front end sensor 45 in a state of being sandwiched between the paper and the paper 35. As a result, as shown in FIG. 7 or 8, the MICR reading process of step 1 is started,
In step 10, when both the paper trailing edge sensor 46 and the paper leading edge sensor 45 output detection signals indicating that paper is present,
In step 11, the paper feed motor 36 is driven in the positive direction by one pulse in response to a command from the controller 50 to rotate the paper feed roller 34. The check paper M further abuts against the foam stopper 43 and pushes it away to open the first paper path 13. In step 12, the magnetic head 2 is instructed by a command from the control unit 50.
3 is activated to start reading MICR characters recorded on the check sheet M.

In step 13, the counting of the pulse counter n in the paper length calculating function 54 is started. Step 1
4, while the paper trailing edge sensor 46 is detecting the check paper M, the processing from step 11 to step 13 is repeated for each pulse, and when it is no longer detected, the process proceeds to step 15 to check. Obtain information about the total paper length S of the paper M. That is, the pulse counter n is set to the first
Paper trailing edge sensor 46 and paper leading edge sensor 45 on the paper path 13 of
The calculated pulse s is obtained by adding the reference pulse c corresponding to the paper path length between the two.

Thereafter, in step 16, the check paper M
One pulse is added to the pulse counter n2 used for counting from the time when the trailing edge of the trailing edge comes off the paper trailing edge sensor 46 until the trailing edge of the MICR character reaches the magnetic head. In step 17, the reference pulse number c2 corresponding to the paper path length from the paper trailing edge sensor 46 to the magnetic head 23 is compared with the pulse counter n2, and the pulse counter n2 shows the reference pulse number c.
If it is smaller than 2, that is, if the rear end portion of the MICR character has not reached the magnetic head 23, step 1
When the magnetic head 23 is made to read the MICR character while feeding the paper for each pulse at 8 and 19, and the pulse counter n2 becomes larger than the reference pulse number c2, that is, the rear end portion of the MICR character is at the magnetic head 23. If it exceeds, the process exits the MICR reading process and proceeds to step 2 of the main process.

In step 2 of FIG. 7, the control unit 50
On the basis of the contents included in the MICR character, it is determined whether or not endorsement printing is necessary. If so, the process proceeds to step 3 to start the endorsement process. As shown in FIG.
In step 31, according to a command from the control unit 50, the carriage 7 is arranged at the position C2 where it comes into contact with the second contact portion 40b of the operation lever 40 outside the right printing area (see FIG. 2) and the operation lever 40 The engagement causes the paper reversal guide plate 38 to move to the open position (see FIG. 13). If the paper reversal guide plate 38 is set to the open position in the MICR reading process of step 1 as in the present embodiment, the process of moving the paper reversal guide member 38 to the open position in step 31 is not necessary. However, in the main processing different from the present embodiment, the paper reversal guide plate 3
8 is placed in the closed position, the endorsement process is performed twice consecutively, or the endorsement process is performed after the front end process, the paper reversal guide plate 38 is moved from the closed position to the back position. It is necessary to move the paper reversal guide member 38 to the open position when starting the writing process.

In step 32, the control unit 50 controls the paper feed motor 36 to the second position based on the endorsement position setting function 52.
Is driven in the reverse direction by the number of pulses obtained by adding the number of pulses p1 corresponding to the paper length up to the end position of endorsement to the pulse b converted from the paper path length of the check paper M of the second paper path 37. It is sent to the downstream side until the end position of the endorsement faces the print head 9. Here, b is the number of pulses converted from the length of the second paper path from the switching lever 44 to the print head 9 via the second paper path 37, and p1 is the start of writing from the rear end of the check paper. The number of pulses corresponding to the paper length up to the position, p
2 is the number of pulses corresponding to the paper length from the start position to the end position of the endorsement of the check paper. In this case, FIG.
As shown in FIG. 5, the trailing edge portion (white circle) of the check paper M is guided by the paper reversing guide plate 38 and advances in the direction approaching the print head 9 along the second paper path (open) 37B. The tip of the check paper M (black triangle) is
The paper is moved along the paper path 13 away from the print head 9, and the rear end portion and the front end portion of the check paper M do not rub against each other.

In step 33, in response to a command from the control unit 50, the paper feed motor 36 is caused to generate a pulse p corresponding to the paper length from the start position to the end position of the endorsement of the check paper M.
While driving the paper feed roller 34 by driving the paper feed roller 34 in the opposite direction by two or more, the print head 7 is made to perform endorsement printing while moving the carriage 7 to the print area C1. In this case, as shown in FIG. 2 or 14, the carriage 7 is disengaged from the operating lever 40, and the paper reversing guide plate 38 is closed by the urging force of the torsion coil spring 41, so that the second paper The path (closed) 37A is selected.

As a result, the front end portion (black triangle) of the check paper M approaches the contact portion between the paper feed roller 34 and the driven roller 35, while the rear end side portion of the check paper M is a paper reversal guide. The sheet is guided by being sandwiched by both the plate 38 and the foam stopper 43, and is introduced into the first paper path 13 along the second paper path (closed) 37A.
After that, the operations of the print head 9 and the paper feed motor 36 are stopped, the endorsement printing process is terminated, and the process proceeds to step 4 of the main process.

In step 4 of FIG. 7, the control unit 50
On the basis of the contents included in the MICR character, it is determined whether or not the front-printing printing is necessary. If the front-printing printing is necessary, the process proceeds to step 5 to start the front-writing processing. As shown in FIG. 10, in step 51, the control unit 50 determines whether or not the endorsement processing has been performed immediately before. If the check sheet M is in the endorsement end state, the process branches to step 52. , Control unit 5
By a command from 0, the carriage 7 is arranged at a position C2 where the carriage 7 contacts the second contact portion 40b of the actuating lever 40 outside the right printing area (see FIG. 2), and by engaging the actuating lever 40, The paper reversal guide plate 38 is moved to the open position (see FIG. 13).

Next, in step 53, a pulse (b + p1 + p) corresponding to the length of the second paper path length plus the paper length from the trailing edge of the check paper M to the end position of the endorsement.
2) It is driven in the forward direction for a few minutes, and the check paper M is returned until its rear end reaches the switching lever 44. in this case,
As in the case of step 32, the trailing edge portion of the check paper M advances along the second paper path (open) 37B, while the leading edge portion of the check paper M advances along the first paper path 13, The rear end portion and the front end portion of the check paper M do not rub against each other.

In step 54, in response to a command from the control unit 50, the carriage 7 is moved outside the print area on the left side to the cam member 4.
7 is arranged at the position C3 where the first paper path 13 is brought into contact with the first paper path 13 (see FIG. 2).
To release. As a result, the check paper M is placed in a state where it can pass only on the first paper path 13.

In step 55, the control unit 50 causes the paper feed motor 36 to subtract the first paper path length from the paper length to the start position of the front writing of the check paper M based on the front writing position setting function 51. Drive by the number of pulses (p3-a) corresponding to the length in the reverse direction to move the check paper M to the first paper path 13
It is sent to the downstream side of the sheet until the start position of the front face faces the print head 9. Here, a is a value obtained by converting the first paper path length from the switching lever 44 to the print head 9 along the first paper path 13 into the number of pulses of the paper feed motor 36, and p3 is This is the number of pulses of the paper feed motor 36 corresponding to the paper length from the trailing edge of the check paper to the start position of the front writing.

In step 56, in response to a command from the control unit 50, the paper feed motor 36 is caused to generate a pulse p corresponding to the paper length from the start position to the end position of the check sheet M.
While driving the paper feed roller 34 by driving in the positive direction by four numbers and moving the carriage 7 to the print area C1, the print head 9 is made to perform front face printing. In this case, as shown in FIG. 2 or FIG. 12, the engagement of the operating lever 40 is released by the movement of the carriage 7, the paper reversing guide plate 38 is closed by the urging force of the torsion coil spring 39, and the second paper The path (closed) 37A is selected. After that, the operation of the print head 9 and the paper feed motor 36 is stopped, and then the front-end printing process is exited to proceed to step 6 of the main process.

In step 6 of FIG. 7, the paper feed motor 36 is driven in the forward direction until the paper leading edge sensor 45 no longer detects the trailing edge portion M of the check paper M in response to a command from the control unit 50, and the check paper is fed. Discharge M.

As described above, according to this embodiment,
Regarding the second paper path 37 for branching from the first paper path 13 and inverting the check paper, the paper reversal guide plate 38
The second paper path (closed) 37A and the second paper path (open) 37B can be selected by opening and closing, and, for example, when positioning is performed during endorsement, or when the endorsement is completed In the situation where the leading edge portion and the trailing edge portion of the check sheet intersect, such as when performing the check sheet, since the paper reversing guide plate 38 is arranged at the open position, the leading edge portion and the trailing edge portion of the check sheet are checked. Means that the paper does not cross each other and does not rub against each other, so that paper jam can be prevented even when the check paper is reversed in a loop shape.

Further, according to the present embodiment, if the second
Even if a paper jam occurs on the paper path (closed) 37A of
By opening the paper reversal guide plate 38, such a check paper can be easily removed.

Further, according to the present embodiment, since the paper reversing guide plate 38 is opened and closed by the engagement with the carriage 7 via the operation lever 40, the paper reversing guide plate 38 is opened and closed. Since only the position of the carriage 7 needs to be controlled, the structure of the control unit 50 can be simplified.

Further, since the switching lever 44 is opened and closed by the engagement with the carriage 7 via the cam member 47 like the paper reversing guide plate 38, the switching lever 44 is switched together with the opening and closing of the paper reversing guide plate 38. The lever 44 can be opened and closed only by controlling the position of the carriage 7.

Furthermore, according to the present embodiment, the foam stopper 43 is provided with the paper reversing guide plate 38 in the closed position.
Since the check paper is sandwiched between the first paper path 1 and the check paper on the second paper path 37,
3 can be introduced.

[0047]

As described above, according to the present invention, in the situation where the end portions of the check sheet intersect with each other, by arranging the paper reversing guide member at the open position, the front end portion and the rear end portion of the check sheet are Since the parts do not rub against each other, it is possible to prevent paper jam even when the check paper is inverted in a loop shape.

Further, according to the present invention, even if a paper jam occurs on the second paper path, such a check paper can be easily removed by opening the paper reversing guide member. .

Furthermore, according to the present invention, only the position of the carriage needs to be controlled in order to open and close the paper reversing guide member, so that the structure of the control system can be simplified.

Furthermore, according to the present invention, by sandwiching the check sheet between the form stopper and the sheet reversing guide plate in the closed position, the check sheet on the second sheet path is surely placed in the first position. Can be introduced into the paper path.

[Brief description of drawings]

FIG. 1 is a perspective view showing a schematic configuration of a printer according to an embodiment.

FIG. 2 is a plan view showing a schematic configuration of a main part of the printer.

FIG. 3 is a cross-sectional view showing a main part of the printer taken along line AA of FIG.

4A is a perspective view showing a schematic configuration of a forward / reverse reversing mechanism of the present embodiment. FIG. (B): It is a top view which shows schematic structure of the same forward / reverse reversing mechanism.

FIG. 5A is a front view showing a schematic configuration of the same forward / reverse reversing mechanism. (B): It is a right view which shows the schematic structure of the same reverse reversing mechanism. (C): It is sectional drawing which shows the principal part of the same reverse rotation inversion mechanism.

FIG. 6 is a block diagram showing a control system including a control unit of the printer according to the present embodiment.

FIG. 7 is a flowchart showing a flow of main processing of the control unit.

FIG. 8 is a flowchart showing a flow of MICR reading processing of the control unit.

FIG. 9 is a flowchart showing a flow of endorsement printing processing of the control unit.

FIG. 10 is a flowchart showing a flow of a front page printing process of the control unit.

FIG. 11 is a diagram showing a paper feed state of check paper in the forward / reverse reversing mechanism of the present embodiment.

FIG. 12 is a diagram showing a paper feed state of check paper in the forward / reverse reversing mechanism of the present embodiment.

FIG. 13 is a diagram showing a paper feed state of check paper in the forward / reverse reversing mechanism of the present embodiment.

FIG. 14 is a diagram showing a paper feed state of check paper in the forward / reverse reversing mechanism of the present embodiment.

[Explanation of symbols]

9 print head 7 carriage 21, 22 Paper guide member 23 Magnetic head 34 Paper feed roller 38 Paper inversion guide plate (paper inversion guide member) 40 Actuating lever (actuating member) 43 foam stopper 44 Switching lever (switching member) 50 control unit 55 Second paper path opening / closing function

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 2C055 EE00 EE03                 2C059 BB06 BB12                 3F049 AA10 DA12 EA17 LA07 LB12                 3F053 EA05 EA08 EB04 EC02 LA07                       LA11 LB03                 3F102 AA11 AB01 BA11 BB02 EA03

Claims (6)

[Claims] 1. A magnetic head capable of reading magnetic ink characters recorded on a check sheet, a print head capable of printing on the check sheet, and a carriage having the print head and capable of reciprocating in a predetermined direction. A paper path for carrying the check paper, a first paper path connecting the magnetic head and the print head, a paper feed roller for carrying the check paper, and a branch from the first paper path A member for forming a second paper path including the periphery of the paper feed roller, and a closed position closed to the paper feed roller and an open position opened to the paper feed roller. Between the first paper path and the second paper path, the paper reversing guide member movable between the first paper path and the second paper path. Switching that can be switched to either one Printer, characterized in that a wood. 2. An operating member engageable with a paper reversing guide member, wherein the paper reversing guide member moves to a closed position by being biased, and moves to a open position by engaging with the operating member. The printer of claim 1, wherein the printer is configured to move. 3. The operation member is configured to operate the paper reversal guide member by engaging with the carriage at a predetermined position.
The listed printer. 4. The switching member is arranged in a position where the first paper path is closed by being biased, and is arranged in a position where the first paper path is opened according to the position of the carriage. The printer according to claim 1, wherein the printer is provided. 5. A foam stopper is provided in the first paper path so as to be able to move forward and backward, and the foam stopper is opposed to the paper feed roller by facing a paper reversal guide member arranged at a closed position. 5. A printer according to any one of the preceding claims, characterized in that it is configured to form a closed paper path. 6. A print head arranged along a first paper path for printing on the recording paper, a first direction of the recording paper toward the print head, and a first direction opposite to the first direction. A paper feed roller that can be conveyed in two directions, and is formed in a loop shape along the outer periphery of the paper feed roller,
A second paper path that branches from the first paper path on the side of the paper feed roller in the second direction and joins the first paper path on the side of the first direction; A switching member arranged at a branch position for switching the path of the recording paper conveyed in the second direction to either the first or second paper path, and the second paper path are formed. A guide member that is displaceable between an open position that guides the recording paper in a direction substantially parallel to the first paper path and a closed position that guides the recording paper to the merging position; A control unit for controlling the opening and closing of the guide member, the control unit controlling the opening and closing of the guide member after the leading end of the recording paper conveyed in the second direction has passed the end of the guide member on the merging side. And a printer for positioning the printer.